If you are rejecting the hadith books because they are man made then why are you accepting translations of the Quran which are also based on the man made Lexicons and dictionaries ?
WHY WE ACCEPT MAN MADE TRANSLATIONS OF THE QURAN ?
There is nothing wrong with accepting man made translations based on man made Lexicons and dictionaries because the message of the Quran is for all mankind and not limited to Arabic speaking people.
According to verse 15:9 Allah has taken responsibility to protect the Zikr which is an attribute of the Quran.
Allah has protected the Quran by preserving the Arabic language and Arabic Text of the Quran.
Any Translation of the Quran is the understanding of an individual who translated the Quran from Arabic into his own language.
So When we read any translation we are looking and understanding the Quran through the eyes and mind of the individual who translated the Quran.
In verse 56:79 Allah said only purified people who have pure minds and hearts will be able to grasp the understanding of the Quran.
56:79 None can grasp (Understand) it (The Quran) except those purified (Who have Pure minds & hearts).
In verse 41:44 Allah said language is irrelevant to understand the Quran.
41:44. If we made it a non-Arabic Quran they would have said, “Why not are explained in detail its verses (Fussilat Ayatuhu)?” WHETHER IT IS ARABIC OR NON-ARABIC, say, “For those who believe, it is a guide and healing. As for those who disbelieve, they will be deaf and blind to it, as if they are being addressed from faraway.”
The Quran was revealed in an Arabic language because it was the language of the people and the Messenger at that time.
14:4 And We have not sent any messenger except in the language of his people, so he may clarify for them. But Allah misguides whom He wills, and He guides whom He wills. And He is the Noble, the Wise.
According to the Quran Allah has created mankind with different Tongues/languages this fact is mentioned in verse 30:22.
30:22 And from His signs is the creation of the heavens and the earth, and the difference of your tongues and your colors. In that are signs for the world.
This is the reason Allah did not placed any prohibition to translate the Quran in different languages.
So it would be wise to come up with our own understanding of the Quran if we have the knowledge of Arabic language and wisdom given by Allah. This way we will not depend on other translators understanding.
When Allah wants to give someone wisdom to understand the Quran then Allah open his/her mind to understand the Quran properly. So in the end Allah will judge each person how he/she understood the Quran.
WHY WE REJECT MAN MADE HADITHS ?
Man made hadiths are statements/sayings/narrations attributed to Prophet Muhammad 200 years later after his death by Persian Imams during Abbasid Caliphate.
Similarly Majority of Traditional Tafsirs of the Quran relies on myths and conjectures because they are influenced by Man Made Hadiths.
Nowhere in the Quran Allah has taken any responsibility to protect the words of Prophet Muhammad in form of hadiths.
Allah has referred the Quran as the Best Hadith in the Quran. So the Quran is the only divine and Authentic Hadith from Allah.
According to my understanding the Man Made Hadith followers have deliberately changed the meanings of different Arabic words in accordance with their Man Made Hadiths so that it will be easy for them to legitimize the Man Made Hadiths when a person read the Translation of the Quran and seek the meanings of the words in Arabic dictionaries.
Allah only secures his revelation and not the man made hadiths.
22:52 And We did not send before you any messenger or prophet, without having the devil interfere with his wishes. Allah then removes what the devil has cast, and Allah secures His revelations. And Allah is Knower, Wise.
Allah is guardian of the Quran and not the man made hadiths.
15:9 Surely we have revealed the Reminder (The Quran) and we will most surely be its guardian.
The Quran contradictions but not the man made hadiths.
4:82 “Do they not ponder / reflect on the Quran? Had it been from other than Allah, they would surely have found in it many contradictions.”
No falsehood could enter it (the Quran), presently or afterwards but this is not the case in man made hadiths.
41:42 No falsehood could enter it, Presently or Afterwards; a revelation from One Most Wise, Praiseworthy.
Quran is a book without any crookedness but we can not say for man made hadiths.
18:1 Praise be to Allah who has sent down the Book to His servant, and He has not made in it any crookedness.
39:28 A Quran in Arabic, without any crookedness, that they may be righteous.
Prophet Muhammad would have been put to death immediately and thrown in hell if he had asked for his own sayings (other than those already part of the Quranic revelation) to be considered as part of the divine revelation:
17:73 And they nearly diverted you (O Muhammad) from what We inspired to you so that you would fabricate something different against Us, and then they would have taken you as a friend!
17:74 And if We had not made you stand firm, you were about to lean towards them a little bit.
17:75 Then, We would have made you taste double (Punishment) in this life and double (Punishment) after death. And then you would not find for yourself any victor against Us.
Prophet Muhammad was prohibited to attribute false sayings to Allah
69:43 A revelation (The Quran) from the Lord of the worlds.
69:44 And had he (Muhammad) attributed some false Sayings to us.
69:45 We would have SEIZED HIM BY HIS RIGHT HAND.
69:46 Then, We would have severed his life-line.
69:47 None of you would be able to prevent it.